79d7cd31f9
It was sharing the nxp directory but no code with pnx833x and will fit better into the new platform makefile scheme, if moved. Also after the pnx833x code has been moved up, the pnx8550 Code was the last users of the nxp dir. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
128 lines
2.4 KiB
C
128 lines
2.4 KiB
C
/*
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*
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* Per Hallsmark, per.hallsmark@mvista.com
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*
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* Based on jmr3927/common/prom.c
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*
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* 2004 (c) MontaVista Software, Inc. This file is licensed under the
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* terms of the GNU General Public License version 2. This program is
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* licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/serial_pnx8xxx.h>
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#include <asm/bootinfo.h>
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#include <uart.h>
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/* #define DEBUG_CMDLINE */
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extern int prom_argc;
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extern char **prom_argv, **prom_envp;
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typedef struct
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{
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char *name;
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/* char *val; */
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}t_env_var;
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char * prom_getcmdline(void)
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{
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return &(arcs_cmdline[0]);
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}
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void __init prom_init_cmdline(void)
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{
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int i;
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arcs_cmdline[0] = '\0';
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for (i = 0; i < prom_argc; i++) {
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strcat(arcs_cmdline, prom_argv[i]);
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strcat(arcs_cmdline, " ");
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}
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}
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char *prom_getenv(char *envname)
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{
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/*
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* Return a pointer to the given environment variable.
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* Environment variables are stored in the form of "memsize=64".
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*/
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t_env_var *env = (t_env_var *)prom_envp;
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int i;
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i = strlen(envname);
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while(env->name) {
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if(strncmp(envname, env->name, i) == 0) {
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return(env->name + strlen(envname) + 1);
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}
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env++;
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}
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return(NULL);
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}
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inline unsigned char str2hexnum(unsigned char c)
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{
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if(c >= '0' && c <= '9')
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return c - '0';
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if(c >= 'a' && c <= 'f')
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return c - 'a' + 10;
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if(c >= 'A' && c <= 'F')
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return c - 'A' + 10;
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return 0; /* foo */
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}
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inline void str2eaddr(unsigned char *ea, unsigned char *str)
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{
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int i;
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for(i = 0; i < 6; i++) {
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unsigned char num;
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if((*str == '.') || (*str == ':'))
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str++;
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num = str2hexnum(*str++) << 4;
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num |= (str2hexnum(*str++));
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ea[i] = num;
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}
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}
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int get_ethernet_addr(char *ethernet_addr)
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{
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char *ethaddr_str;
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ethaddr_str = prom_getenv("ethaddr");
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if (!ethaddr_str) {
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printk("ethaddr not set in boot prom\n");
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return -1;
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}
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str2eaddr(ethernet_addr, ethaddr_str);
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return 0;
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}
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void __init prom_free_prom_memory(void)
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{
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}
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extern int pnx8550_console_port;
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/* used by early printk */
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void prom_putchar(char c)
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{
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if (pnx8550_console_port != -1) {
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/* Wait until FIFO not full */
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while( ((ip3106_fifo(UART_BASE, pnx8550_console_port) & PNX8XXX_UART_FIFO_TXFIFO) >> 16) >= 16)
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;
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/* Send one char */
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ip3106_fifo(UART_BASE, pnx8550_console_port) = c;
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}
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}
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EXPORT_SYMBOL(get_ethernet_addr);
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EXPORT_SYMBOL(str2eaddr);
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